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authorJeremy Kerr <jeremy.kerr@canonical.com>2010-07-06 18:30:06 +0800
committerNicolas Pitre <nico@fluxnic.net>2010-10-20 00:27:33 -0400
commit0ea1293009826da45e1019f45dfde1e557bb30df (patch)
tree7111bcd355921f03415182845e5f236ffe1896f4 /arch/arm/mach-s3c2410
parent1ea64615601229f0dc16dee91dc5b50216411baa (diff)
arm: return both physical and virtual addresses from addruart
Rather than checking the MMU status in every instance of addruart, do it once in kernel/debug.S, and change the existing addruart macros to return both physical and virtual addresses. The main debug code can then select the appropriate address to use. This will also allow us to retreive the address of a uart for the MMU state that we're not current in. Updated with fixes for OMAP from Jason Wang <jason77.wang@gmail.com> and Tony Lindgren <tony@atomide.com>, and fix for versatile express from Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>. Signed-off-by: Jeremy Kerr <jeremy.kerr@canonical.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Jason Wang <jason77.wang@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Kevin Hilman <khilman@deeprootsystems.com>
Diffstat (limited to 'arch/arm/mach-s3c2410')
-rw-r--r--arch/arm/mach-s3c2410/include/mach/debug-macro.S11
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/arm/mach-s3c2410/include/mach/debug-macro.S b/arch/arm/mach-s3c2410/include/mach/debug-macro.S
index 0eef78b4a6e..5882deaa56b 100644
--- a/arch/arm/mach-s3c2410/include/mach/debug-macro.S
+++ b/arch/arm/mach-s3c2410/include/mach/debug-macro.S
@@ -19,13 +19,12 @@
#define S3C2410_UART1_OFF (0x4000)
#define SHIFT_2440TXF (14-9)
- .macro addruart, rx, tmp
- mrc p15, 0, \rx, c1, c0
- tst \rx, #1
- ldreq \rx, = S3C24XX_PA_UART
- ldrne \rx, = S3C24XX_VA_UART
+ .macro addruart, rp, rv
+ ldr \rp, = S3C24XX_PA_UART
+ ldr \rv, = S3C24XX_VA_UART
#if CONFIG_DEBUG_S3C_UART != 0
- add \rx, \rx, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART)
+ add \rp, \rp, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART)
+ add \rv, \rv, #(S3C2410_UART1_OFF * CONFIG_DEBUG_S3C_UART)
#endif
.endm